The Mariners comfortably accounted for Wanneroo in WACA first grade round six play at Kingsway Reserve on Saturday.
After amassing 8/364, the Mariners bowlers never allowed the Roos into the game and bowled them out for 236.
Aidan Andrews’ incisive bowling netted him the first two Wanneroo wickets enroute to his best first grade figures of 4/78.
His 10 wickets led the way for the Mariners this season and he broke the back of the home team with his dismissal of Christian Smith (70), when the Roos could see some life at 4/190.
Brendon Diamanti is making timely contributions with bat and ball this season and followed up his 64 with 4/29.
The all-rounder captain-coach has been notable for performing to ram home an advantage, something he did again on Saturday after Andrews set the team on the path.
The second grade bowlers put their best foot forward at Lark Hill, but could not engineer the great escape after making only 140 last week.
Wanneroo slipped home with 157 as Brad Ranford led the Mariners bowling pack with 4/42.
Second innings runs for elder statesmen Corey Whisson (81) and Daniel Whiting (31) guided Rockingham-Mandurah to 8/215 in the second innings.
Thirds and fourths suffered heavy losses after Wanneroo set large totals for an unchallenged victory.
The thirds lost the first game after succumbing for 164 setting off for the Roos’ 295.
Fourth grade avoided outright defeat after crumbling for just 57 in the first dig by making a better fist of things a second time around with 3/59.
Wins in the Under 17s and Under 15s against Wanneroo put them in the top six.
The Under 17s bowlers hunted as a pack to round off a terrific team display to skittle the Roos for 114 after making 6/291.
The Under 15s made 160 in the first innings of the game work for them as they strangled Wanneroo for 131 at Lark Hill to leapfrog them into fifth spot.
At Lark Hill in low scoring Sunday fixtures, there was a narrow win and loss for the Mariners.
Ben Cabassi’s 32 anchored the Rockingham-Mandurah Under 13s’ chase of Melville’s 8/69, after Ronan Hogarth took 2/5 from seven overs.
The Under 14s nearly pulled off a miracle after making 89 when they had Melville 7/58. The Storm just got home, making 8/98 as Lewis Starbuck snared 3/9.
Next week Rockingham-Mandurah host University at Lark Hill (northern grounds) with the action starting at 11.30am on Saturday. The T20 team plays Fremantle and Claremont-Nedlands on Sunday at Stevens Reserve.